Eyeglass-mounting.



No. 841,919. PATENTED JAN. 22', 1907. N. M. BAKER.

EYEGLASS MOUNTING.

APPL IOATION FILED JULY 12, 1905.

UNITED STATES PATENT OFFICE.

NELSON M. BAKER, OF WVORCESTER, MASSACHUSETTS, ASSIGNOR TO AMERICANOPTICAL COMPANY, OF SOUTHBRIDGE, MASSACHU SETTS, A CORPORATION OFMASSACHUSETTS.

EYEGLASS-MOUNTING.

Specification of Letters Patent.-

Patented Jan. 22, 1907.

Application filed July 12, 1906. Serial No. 269.308.

1'0 Ml whom, it may concern:

Be it known that I, NELsoN M. BAKER, a citizen of the United States,residing at Southbridge, in the county of Worcester and StateofMassachusetts, have invented certain new and useful Improvements inEyeglass-Mountings, of which the following is a specification.

My invention relates to im rovements in eyeglasses, and more particulary to improvements in eyeglass-mountings, comprising the post,bow-spring, and nose-guard.

The object of my invention is to improveupon the construction of thepost, bowspring, and nose-guard at their attached ends as ordinarilymade, and particularly to attach the bow-spring and the nose-guard tothe post in such a manner that there will be no liability of any lateralmovement of the bow-spring and nose-guard to loosen the attaching-screw.

My invention consists in certain novel features of construction of myimprovements, as will be hereinafter fully described.

Referring to the drawings, Figure 1 is a perspectiveview of a singleeyeglass having mountings embodying my improvements combined therewith.Fig. 2 is a front view of the nose-guard detached. Fig. 3 is a sectionon line 3 3, Fig. 2, looking in the direction of arrow 0,, same figure.Fig. 4 shows the end of the bow-spring detached. Fig. 5 is a section online 5 5, Fig. 4, looking in the direction of arrow 1), same figure.Fig. 6 is a detached view showing the head of the post in full lines andthe bow-spring and nose guard in section. Fig. 7 corresponds to Fig. 3,but shows a modified construction of the attaching end of thenose-guard. Fig. 8 is a section on line 8 8, Fig. 7, looking in the direction of arrow d, same figure. Fi 9 corresponds to Fig. 4, but shows amodified construction. Fig. 10 is a section 011 line 10 10, Fig. 9,looking in the direction of arrow 6, same figure. Fig. 11 is a modifiedconstruction of the construction shown in Fig. 10. Fig. 12 correspondsto Fig. 6, but shows a modified construction. Figs. 3 to 12, inclusive,are on an enlarged scale.

In the accompanying drawings, 1 is the lens, in this instance shown asrimless.

2 is the mounting for the bowspring 3 and nose-guard 4. The mounting 2comprises the two straps 2, attached to the lens 1 by a screw 5 in theordinary way, the side lugs 2, which rest upon the edge of the lens inthe usual way, and the post 2', which in this instance has a recessedouter end or head with two side flanges 2 in the usual way. Acentral-threaded opening extends through the post 2 to receive thefastening-screw 7 in the usual way.

I will now proceed to describe my improvements, which relate moreparticularly to the construction of the attaching end of the noseguardand of the bow-spring in connection with the head of the post to preventlateral movement of the nose-guard and bow-spring.

The end of the bow-s ring 3 has an opening 3 therethrough in t e usualway for the attaching-screw 7. spring is also preferably slotted or hasa longitudinal opening 3 therein above and below the opening 3, as shownin Fig. 4,. The attaching end of the nose-guard 4 has an opening 4 forthe attaching-screw in the usual way and also has therein in thisinstance above and below said opening 4 a grooved or depressed portion4, (see Fig. 2,) forming a projection 4 on the under side of theattaching end of the nose-guard. (See Fig. 3.)

In assembling the bow-spring 3 and noseguard 4 in the head of the post 2the projection 4 on the attaching end of the noseguard 4 is adapted toextend into the slotted end or the opening 3 in the bow-spring 3, asshown in sectional View in Fig. 6.

By making the attaching ends of the bowspring and noseguard withinterlocking surfaces the parts are locked to each other and thenose-guard is prevented from moving, and any side pressure is broughtagainst the spring, which as it is in the bottom of the post is notliable to spread apart the side flanges of the post and cause theloosening of the fastening-screw 7.

In Fig. 9 is-shown a modified construction of the end of the bow-springshown in Fig. 4. In said Fig. 9 the end of the bow-spring is not cutthrough, but is grooved or recessed above and below the central opening3, as shown at 3 Fig. 9, and also in Fig. 10.

In Fig. 7 is shown a modified construction of the attaching end of thenose-guard shown in Fig. 2. In said Fig. 7 there is no recess or The endof the bowgroove on the outer surface of the attaching end of thenose-guard, as in Fig. 2, but a projection P is formed on the inner sideof said attaching end, as shown in Fig. 8.

In Fig. 11 is shown a modified construction of the end of the bow-springshown in Figs. 9 and 10. In said Fig. 11 there is a groove or recess 3on one side of the end of the bow-spring, and the other side of the endof thebow-spring is made curved instead of straight.

Fig. 12- corresponds with Fig. 6; but the inner end of the recess in thepost is made curved to receive the curved inner surface of the spring.

It will be understood that the details of construction of myimprovements may be varied, if desired.

In the preferred construction of my improvements the flanged head orouter end of the post may be of the ordinary construction with a smoothinner surface, and the end of the bow-spring will be slotted or providedwith a recess to receive a projection on the attaching end of thenose-guard, or vice versa.

Having thus described my invention, what I claim as new, and desire tosecure by' Letters Patent, is

1. In an eyeglassmounting, the combination with the outer end or head ofthe post, having a smooth inner surface to receive the bow-spring andnose-guard, of a bow-spring,

having an opening through its end for the attaching-screw, and alsohaving an opening therethrough above and below said opening, andconnected with said opening, and a noseguard having an openingtherethrough for the attaching-screw, and having a grooved portion orrecess therein above and below said opening, forming a projection on theinner side of the attaching end of the noseguard, to extend into theslotted end in the bow-spring, and a screw for attaching said partstogether.

2. In an eyeglass-mounting, the combination with the outer end or headof the post, having a smooth inner surface to receive the bowspring andnoseguard, of a bowspring, having an opening through its end for theattaching-screw, and a central longitudinal re cess therein connectedwith said opening, and a nose-guard having an opening therein for theattaching-screw, and having a central groove or recess therein above andbelow said opening, forming a central longitudinal projection on theinner side of the noseguard-attaching arm, to extend into the recess inthe bow-spring-attaching arm, and a screw to secure the parts together.

NELSON M. BAKER Witnesses:

E. E. SABIN, J. C. WELLS.

